P&G Earns Suds-Enhanced Dish Detergent Patent
Patent No. US 6,645,925 B2: P&G pat-ented a liquid detergent with increased suds volume and suds retention for hand dishwashing. The detergent consists of a suds enhancing quaternary nitrogen-containing monomeric unit or zwitterionic monomeric polymeric unit, a soil- and grease-removing detersive surfactant and adjunct ingredients.
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